<template>
    <div class="app-container">
        <h2 style="text-align: center;">发布新课程</h2>
        <el-steps :active="3" process-status="wait" align-center style="margin-bottom: 40px;">
            <el-step title="填写课程基本信息"/> 
            <el-step title="创建课程大纲"/> 
            <el-step title="最终发布"/>
        </el-steps>

        <div class="ccInfo">
            <img :src="coursePublish.cover"> 
            <div class="main">
                <h2>{{ coursePublish.title }}</h2>
                <p class="gray"><span>共{{ coursePublish.lessonNum }}课时</span></p> 
                <p><span>所属分类：{{ coursePublish.subjectLevelOne }} — {{coursePublish.subjectLevelTwo }}</span></p>
                <p>课程讲师：{{ coursePublish.teacherName }}</p> 
                <h3 class="red">￥{{ coursePublish.price }}</h3>
            </div> 
        </div>

        <div>
            <el-button @click="previous">返回修改</el-button>
            <el-button :disabled="saveBtnDisabled" type="primary" @click="publish">发布课程</el-button>
        </div>
    </div>
</template>



<script>
import course from '@/api/edu/course.js'
export default {
    data() { 
        return {
            saveBtnDisabled: false, // 保存按钮是否禁用 
            courseId: '',
            coursePublish: {}   // 封装课程确认信息
        }
    },
    created() {
        // 获取路由ID值
        if (this.$route.params && this.$route.params.id) {
            this.courseId = this.$route.params.id
            // 调用接口方法根据 ID 查询课程确认信息
            this.getCoursePublishId()
        }
    },
    methods: {
        // 根据课程ID查询课程确认信息
        getCoursePublishId() {
            course.getPublishCourseInfo(this.courseId)
                .then(response => {
                    this.coursePublish = response.data.publishCourse
                })
        },
        previous() {
            console.log('previous')
            // 跳转到第二页
            this.$router.push({ path: '/course/chapter/' + this.courseId })
        },
        publish() {
            this.$confirm('此操作将发布课程信息, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).then(() => {
                course.publishCourse(this.courseId)
                    .then(response => {
                        // 提示信息
                        this.$message({
                            type: 'success',
                            message: '课程发布成功!'
                        });
                        // 成功跳转到列表页
                        this.$router.push({ path: '/course/list' }) 
                    })  
            }).catch(() => {})
        }
        // publish() {
        //     course.publishCourse(this.courseId)
        //         .then(response => {
        //             // 提示信息
        //             this.$message({
        //                 type: 'success',
        //                 message: '课程发布成功!'
        //             });
        //             // 成功跳转到列表页
        //             this.$router.push({ path: '/course/list' }) 
        //         }) 
        // }
    }
}
</script>

<style scoped>
.ccInfo {
    background: #f5f5f5; 
    padding: 20px; 
    overflow: hidden; 
    border: 1px dashed #DDD; 
    margin-bottom: 40px; 
    position: relative;
}
.ccInfo img { 
    background: #d6d6d6; 
    width: 500px; 
    height: 278px; 
    display: block; 
    float: left;
    border: none; 
}
.ccInfo .main {
    margin-left: 520px; 
}
.ccInfo .main h2 { 
    font-size: 28px; 
    margin-bottom: 30px; 
    line-height: 1; 
    font-weight: normal;
}
.ccInfo .main p { 
    margin-bottom: 10px; 
    word-wrap: break-word; 
    line-height: 24px; 
    max-height: 48px; 
    overflow: hidden;
}
.ccInfo .main p { 
    margin-bottom: 10px; 
    word-wrap: break-word; 
    line-height: 24px; 
    max-height: 48px; 
    overflow: hidden;
}
.ccInfo .main h3 { 
    left: 540px; 
    bottom: 20px; 
    line-height: 1; 
    font-size: 28px; 
    color: #d32f24; 
    font-weight: normal; 
    position: absolute;
}
</style>
